https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps refs #85  <img width="286" alt="Screen Shot 2020-12-24 at 8 20 39 am" src="https://user-images.githubusercontent.com/418747/103041323-ce796900-45c1-11eb-856c-9bdd7cb164ee.png"> <img width="803" alt="Screen Shot 2020-12-24 at 8 06 30 am" src="https://user-images.githubusercontent.com/418747/103041368-ea7d0a80-45c1-11eb-8424-c54465b1d137.png"> On one of my GitHub Pages sites it looks like this: <img width="753" alt="Screen Shot 2020-12-24 at 8 03 49 am" src="https://user-images.githubusercontent.com/418747/103041456-2fa13c80-45c2-11eb-927f-2253704c6c00.png">
https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps
refs #85
On one of my GitHub Pages sites it looks like this: